212111111012102 has 8 divisors (see below), whose sum is σ = 318168608435496. Its totient is φ = 106054908200272.

The previous prime is 212111111012069. The next prime is 212111111012191. The reversal of 212111111012102 is 201210111111212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×212111111012102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323243183 + ... + 323898714.

It is an arithmetic number, because the mean of its divisors is an integer number (39771076054437).

Almost surely, 2^{212111111012102} is an apocalyptic number.

212111111012102 is a deficient number, since it is larger than the sum of its proper divisors (106057497423394).

212111111012102 is a wasteful number, since it uses less digits than its factorization.

212111111012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647305782.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 212111111012102 its reverse (201210111111212), we get a palindrome (413321222123314).

The spelling of 212111111012102 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred eleven million, twelve thousand, one hundred two".